Note 2 - Summary Of Significant Accounting Policies (Detail) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012	Jun. 30, 2012
Cash, Uninsured Amount (in Dollars)	$ 13,589,000		$ 13,589,000		$ 863,000
Depreciation (in Dollars)	1,162,000	1,260,000	3,497,000	3,912,000
Research and Development Expense (in Dollars)	$ 1,688,000	$ 1,529,000	$ 4,862,000	$ 4,147,000
Incremental Common Shares Attributable to Contingently Issuable Shares (in Shares)	385,000	325,000	347,000	316,000
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life			2 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life			20 years